Where does “तॄ” come from?

तॄ (Sanskrit) comes from Proto-Indo-European terh₂- — to cross over, pass through, overcome.

तॄ (Sanskrit): to pass

Definitions

Step	Language	Word	Meaning
1	Proto-Indo-European	terh₂-	to cross over, pass through, overcome

तॄ — Etymology, Origin & Word History | Etymology Explorer